Method and apparatus for communication of data in a remote tire monitoring system
First Claim
Patent Images
1. A remote tire monitor system comprising:
- a plurality of tire monitors associated with wheels of a vehicle, each wheel including a tire having a previously determined characteristic frequency response including passband frequencies and attenuation band frequencies, each tire monitor including a transmitter configured to transmit tire data at a transmission frequency chosen in the passband frequencies of the characteristic frequency response of the tire; and
a receiver configured to receive the tire data.
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Accused Products
Abstract
A tire monitor (100) mountable inside a tire (200) includes a tire data sensor (402) and a transmitter (406). The transmitter is configured to transmit tire data at one or more frequencies within a passband of frequencies of the tire. The transmitter of the tire monitor is tuned in relation to the characteristic frequency response of the tire to ensure reliable transmission and reception of radio signals conveying the tire data to a remote receiver.
40 Citations
23 Claims
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1. A remote tire monitor system comprising:
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a plurality of tire monitors associated with wheels of a vehicle, each wheel including a tire having a previously determined characteristic frequency response including passband frequencies and attenuation band frequencies, each tire monitor including a transmitter configured to transmit tire data at a transmission frequency chosen in the passband frequencies of the characteristic frequency response of the tire; and a receiver configured to receive the tire data. - View Dependent Claims (2, 3, 4)
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5. A tire monitor mountable inside a tire, the tire monitor comprising:
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a tire data sensor; and a transmitter configured to transmit tire data at one or more transmission frequencies chosen to be within a previously identified passband of frequencies of the tire wherein radio frequency energy is relatively slightly attenuated. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. A method for operating a remote tire monitor system of a vehicle, the method comprising:
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producing tire data indicative of a tire characteristic of a tire of the vehicle; and using the tire data to modulate a radio carrier signal, the radio carrier signal having a transmission frequency chosen for reduced attenuation of the radio carrier signal by the tire. - View Dependent Claims (14, 15)
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16. A method for selecting a transmission frequency for a tire monitor for use with a tire, the tire monitor communicating tire data to a remote receiver when mounted on the tire, the method comprising:
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characterizing frequency response of the tire to radio transmissions of selected frequencies; and selecting a transmission frequency for the tire monitor by using the frequency response of the tire to identify one or more frequencies having reduced attenuation of the radio transmissions and selecting the transmission frequency from among the one or more frequencies. - View Dependent Claims (17, 18, 19, 20)
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21. A remote tire monitor system for a vehicle having a plurality of wheels, the remote tire monitor system comprising:
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one or more tire monitors, each respective tire monitor being associated with a tire of a respective wheel of the vehicle, the tire having a previously determined characteristic frequency response to electromagnetic energy imparted on the tire, each respective tire monitor including a respective tire data sensor, and a respective radio transmitter coupled with the tire data sensor and configured to transmit electromagnetic energy to convey tire data, the respective radio transmitter transmitting the electromagnetic energy at one or more transmission frequencies chosen in relation to the characteristic frequency response of the tire; and a receiver configured to detect the transmitted electromagnetic energy. - View Dependent Claims (22)
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23. A tire monitor mountable inside a tire of a vehicle, the tire monitor comprising:
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a tire data sensor to produce data indicative of a tire condition; and a transmit circuit coupled with the tire data sensor to transmit tire data at one or more transmission frequencies chosen to be within a previously identified passband of frequencies of a previously determined characteristic frequency response to electromagnetic energy imparted on the tire.
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Specification